Ingot-manipulator.



` Nu. 660,775. .Patented oct. auf, .19g-6 2 A. T. KELLER.y

INGOT MANIPULATUR.

(Applictionmed Aug. ls1. wao.)

Hu Model.) 3 Sheets-Shank l.

No. 650,775. Patented on. 3o, |900'. A. T. KELLER.

INGOT MANIPULATOR.

(Applcatiop Bled Aug. 31, 1900.)

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Ulu Model.)

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No. 660,775. Patanted Det. 30, |900.

A. T. KELLER.

INGGT MANIPULATQR. (Application lod Aug. 31, 1900.) (lo Model.) 3 Shnets-$heat 3.

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UNITED STATES PATENT OFFICE..

ALBERT T. KELLER, OF WILKINSBURG, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO PHILIP KELLER, OF EDGEWOOD PARK, PENNSYLVANIA.

INGOT-MANIPULATOR.

SPECIFICATION formingpart of Letters Patent N o. 660,775, dated October 30, 1900. Application filed August 31,1900. Serial No. 28,648. (No model.)

To all whom it may concern:

Be it known that I, ALBERT T. KELLER, a citizen of the United States, residing at Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented ordiscovered certain new and useful Improvements in Ingot-Manipulators, of which improvements the following is a specification.

The invention described herein relates to certain improvements in in got-manipulators. It is desirable that the fingers or portions of the manipulator directly operative on the ingot should have a straight or approximately straight vertical movement. Such movement has generally been obtained by arranging theV lifting mechanism directly below the feed-tables, Where it is liable to be injured by scale, &c., dropping from the ingot.

The objects of the present invention are to provide for the arrangement of the shifting and lifting mechanism at one side of the feedtable and to so connect the lifting-frame to the lifting mechanism as to insure its maintenance in a vertical or approximately vertical position at all times.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a top plan View of a portion of a feed-table with my improved manipulating mechanism arranged in operative relation thereto. Fig. 2 is a sectional elevation of the same, the plane of section being indicated by the line II II, Fig. l. Fig. 3 is a sectional elevation on a plane indicated by the line III III, Fig. 2, showing the position of the feed-table and manipulator relative to the mill; and Fig. 4 is a sectional detail view of the lifting head or frame.

In the practice of my invention a fluidpressure lifting-cylinder 1 is secured upon a bed or carriage 2, provided with Wheels 3, which are mounted on rails 4, arranged parallel with the axes of the rolls 5 of the feedtable. The backand-forth movement of this carriage is effected by means of fluidpressure cylinder or cylinders 6, having their piston or ram 7 connected by links 8 to the carriage and preferably to the bearings 2O of the shaft 9, such connection being effected by a cross-bar 10, bolted to said bearings and pivotally connected to links 8. The ram or piston of the cylinder 1 is connected bylinks 11 to the arm 12, secured to the shaft 9, and 55 on said shaft are also secured the arms 13. These arms 13 have their outer ends pivotally connected to the lifting head or frame, which consists of the vertical sections 14, held together bya bolt 15 andsuitably spaced 6o by blocks 16, as shown in Fig. 4. The outer ends of the arms 13 are pivotally secured Within slots in the lower ends of the vertical portions 14 of the lifting-head, so that when said arms are vibrated up and down by the shaft 9 a corresponding up-and-down movement will be imparted to the head. As the connection between the head and the liftingarms is loose or pivotal in its character, the head would be free to turn on said pivots, as 7o they are in line with each other. Such turning movement, however, is prevented by means of a link 17, connected to an extension 18 from the lower end of one of the vertical pieces, preferably the middle vertical section, and having its opposite end pivotally connected to the carriage. The point of connection with the carriage should, in order that the head may move up vertically in a direct line, be arranged, as shown in Figs. 1 8o and 2, in -a vertical plane passing through the axis of the shaft 9. In the construction shown the anchorage for the inner end of the link 17 is formed by a lug 19, formed on or secured to the bed-plate or carriage 2, and is connected to the inner end of the link by a bolt whose axis lies in a vertical plane passing through the axis of the shaft 9. This construction insures the practically straightline movement in a vertical plane of all por- 9o tions of the lifting-head of the manipulator. By reference to Figs. 1 and 2 it will be seen that the lifting mechanism properis arranged outside of the line of movement of the ingot on the feed-table, so that it is free from liability of injury from scale dropping from the ingot, and that such portions of the lifting mechanism as project across the line of movement of the ingot are so constructed as not to be liable to injury by the dropping scale. roo

In order to further protect the lifting mechanism, a removable shield 21 is placed over the parts adjacent to the feedable.

I claim herein as my inventiony l. The combination of a feed-table for rolling-mills, a lifting-head arranged under said table, a lifting mechanism arranged to one side of the feed-table or outside of the path of movement of the ingot on the table, a pivotal connection of the mechanism to the head, and means for holding the'headin a vertical or approximately Vertical position, substantially as set forth.

2. The combination of a feed-table for rolling-mills, alifting-head arranged under the feed-table, a lifting mechanism arranged ontside of the path of movement of the ingot on the table, pivotal connections from the lift ing mechanism to the block, means for holding the head in a vertical or approximately Vertical position, and means for shifting the lifting mechanism and head, substantially as set forth.

The combination of a feed-table for rolling-mills, a lifting-head arranged under said table, a carriage arranged at one side of the feed-table, a lifting mechanism mounted on the carriage, pivotal connections from theV 4lifting mechanism to the head, a link pivotally connected to the head and carriage, and means for shiftingthe carriage, substantially as set forth.

In testimony whereof I have hereunto set my hand.

ALBERT T. KELLER.

Witnesses: DARWIN S. WoLcoTT, H. M. CORWIN. 

